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25 entries under erstwhile topic. ×

2
used to be(expression, idiom, adverb, earlier, then)
2
water under the bridge(expression, idiom, adverb, earlier, then)
1
already(adverb, earlier, then, before, once)
1
before(adverb, earlier, then, once)
1
once(adverb, earlier, then, before)
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APASmart Define. (1970). eons ago thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/eons_ago/thesaurus/synonyms
ChicagoSmart Define. 1970. "eons ago thesaurus" https://smartdefine.org/eons_ago/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 1970, eons ago thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/eons_ago/thesaurus/synonyms>.
MLASmart Define. "eons ago thesaurus" 1 January 1970. Web. 23 September 2026. <https://smartdefine.org/eons_ago/thesaurus/synonyms>